Stop Motion Animation of Falling

For my stop motion animation, I made a ball (bottle cap) roll off a ledge and bounce off the Spartan's head, distracting him enough for the Elite to sneak up on him. First, I took reference of a bouncing ball and used Tracker to get an idea of the spacing. The character movements were difficult because the figures were not flexible or sturdy enough to hold good poses. The Elite (red thing) had digitigrade legs which had little to no bending flexibility.
My first pass was shot with Stop Motion Studio on my phone but it was too shaky so I re-shot it with a camera.